[texhax] Q: correct LM font name to use in Kubuntu gutsy

[D. R. Evans]

Wanting to try out lmr12, if I look in /usr/share/texmf/fonts/tfm/public/lm
I see a bunch of metric files:

[H:lm] ls -al *lmr12*tfm
lrwxrwxrwx 1 root root    12 2007-12-05 18:59 cork-lmr12.tfm -> ec-lmr12.tfm
-rw-r--r-- 1 root root  9308 2007-01-15 17:01 cs-lmr12.tfm
-rw-r--r-- 1 root root 12272 2007-01-15 17:01 ec-lmr12.tfm
-rw-r--r-- 1 root root 18092 2007-01-15 17:01 el-lmr12.tfm
-rw-r--r-- 1 root root  6860 2007-01-15 17:01 l7x-lmr12.tfm
-rw-r--r-- 1 root root  9668 2007-01-15 17:01 qx-lmr12.tfm
-rw-r--r-- 1 root root 12032 2007-01-15 17:01 rm-lmr12.tfm
-rw-r--r-- 1 root root 21160 2007-01-15 17:01 t5-lmr12.tfm
-rw-r--r-- 1 root root  8420 2007-01-15 17:01 texnansi-lmr12.tfm
-rw-r--r-- 1 root root  1596 2007-01-15 17:01 ts1-lmr12.tfm
[H:lm]

In my plain TeX file, which of these should I use in the statement:
\font\rm=??????-lmr12

I've tried a few of them in the place of the question marks, and it sure
isn't obvious that there's any difference in the result, at least in the
ones that I've tried.

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